Loud chatter/ticking sound Only on a Cold Start
I think that image is from his claim and that is his auto insurance deductible. Could be wrong though. Looks like whoever it's from already denied the engine replacement.
Seriously though, that's the dowel pin clanging on the plate in one or both of the 2 adjusters that wasn't replaced.
The problem is not the adjusters in general, but only the plates and pins that are in there. These wear out. If you buy new adjusters from Mercedes, sooner or later they will break again. For this purpose there is a repair kit made of hardened material. So they will never break again.
You only changed two adjusters and now one of the other two is making noise.
A adjuster at Mercedes costs $725 and sooner or later it breaks down again.
The repair kit costs $1,600 for all four and you'll never have any problems again.
Last edited by SRG_C63; Jul 8, 2020 at 04:39 PM.
The problem is not the adjusters in general, but only the plates and pins that are in there. These wear out. If you buy new adjusters from Mercedes, sooner or later they will break again. For this purpose there is a repair kit made of hardened material. So they will never break again.
You only changed two adjusters and now one of the other two is making noise.
A adjuster at Mercedes costs $725 and sooner or later it breaks down again.
The repair kit costs $1,600 for all four and you'll never have any problems again.
Part #'s for the repair kit?




Price was cheaper than the kit above plus they have delved deeply into the hardness values of plates verses pins to find the best medium to use in the plates.
Only time and mileage will tell but $880 for a kit (4 plates & 4 pins) is far less than $1000+ each for complete CA's from Stealerships.
OEM CA's seem to wear out at all different rates which makes you wonder about quality control considering its only the base plate that wears.
The Best of Mercedes & AMG
The C63 is on my shortlist but some of these issues concern me having owned an Audi S4 B6 with the 4.2 V8 and timing issues. In fact that startup rattle in the video above sounds identical to the one I used to hear.
I watched this video which documents the major faults and makes me wonder if I'd be stepping into the same problems again. When I bought the S4 the timing issue wasn't known about but it cost me over £6000 because 22 of the 40 valves got bent.
For the S4 Audi decided to put a V8 in an A4 engine bay. What they had wouldn't fit so they built a smaller engine for the purpose - it used timing chains to save space but they had to put them around the back to fit peripherals around the front. The theory was that the timing system would last the life of the engine and would never need servicing. In reality though the oil didn't stay in the head to pressurise the tensioners which, in turn, slap the guides which were made from a substandard material (which presumably they knew as they were revised for the B7 S4 and upgraded completely for the B7 RS4).
They also had a similar issue with the cam adjusters and pins that wallowed out the lollipop shape they sat in.






